My 4AT automatic outback has just started to make some ckliking noise when selecting gears from neutral and last week a noticeable whining noise coming from front housing. Have tried search on the forum but don’t find any threat on the matter, does someone know what maybe and solution? 
 

thanks for any help

clicking or whining?

do you hear or feel a thump when changing gears from fwrd / N / rvrs ??

have been dripping any fluids?

is the transmission fluid level OK? that one must be checked while idling.

the front differential stick is on the other side of the engine, is that fluid OK?

is the car new to you?

Clicking when stopped and I select either front or rear gear. I removed front left wheel and moved shaft, noise is coming from inside differential housing. Oil is perfect in color and capacity, no licking anywhere.

But now I get a whining noise louder everyday from differential housing, it’s not wheel bearing, definitely housing. Oil has been service  twice in 60.000kms and I use Mobilube 75W90.

check the front diff oil level - separate from the auto tranny fluid... usually the dip stick is on the opposite side from the ATF dipstick, and is often overlooked

the diff's drain plug has a magnet, excessive amount (or size!) of debris on it would be a problem.